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J. D. BARRIER. HEATING AND vmtrlm'rmqs'rovn. No. 564,817. Patented July28, 1896.

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No. 564,817. Patented July 28, 1896 WIT/V5 SE8. INVENTOR z V/VJQ/cut/LAW ATTORNEYS.

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UNITED STATES PATENT OFFICE.

JOHN D. BARRIER, OF MOUNT PLEASANT, NORTH CAROLINA.

HEATING AND VENTILATING STOVE.

SPECIFICATION forming part of Letters Patent No. 564,817, dated July 28,1896.

Application filed August 14, 1895. Serial No. 559,258. (No model.)

To all whom it may concern:

Be it known that I, JOHN DANIEL BARRIER, of Mount Pleasant, in thecounty of Cabarrus and State of North Carolina, have invented certainnew and useful Improvements in Heating and Ventilating Stoves, of whichthe following is a full, clear, and exact description.

This invention relates to stoves for heating purposes, such as are usedin dwellings, schools, churches, and the like for heating or warming theair, and the object of the invention is to provide a device of thischaracter of a simple and inexpensive construction, adapted not only forheating the air but for ventilating or purifying the air of the room orbuilding heated by it, so that such air is freed from germs andimpurities and is rendered wholesome and fit for respiration without thenecessity of exposing the occupants of the room or building to thedangers of drafts of cold air, as is usual with other means employed forpurposes of ventilation.

The invention consists in a heating device having double wallssurrounding a fire-pot having an outlet for the heated products ofcombustion and surrounded by a drum connected at its lower end to thespace between the double walls of the device, which constitutes ahot-air chamber, the upper end of the drum having communication with theair in the room and being provided with a damper, and a hot-air tubeextending across the fire-pot of the heater and adapted to draw air fromthe room wherein the heater is located.

The invention also contemplates certain novel features of theconstruction, combination, and arrangement of the various parts of theimproved heating and ventilating stove whereby certain importantadvantages are attained, and the device is made simpler, less expensive,and otherwise better adapted for use than other similar devicesheretofore employed, all as will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in theclaims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of the ventilating and heating stoveembodying my improvements. Fig. 2 is an inverted plan view of the same.Fig. 3isaverticalsection taken longitudinally through the stove in theplane indicated by the line a; 00 in Fig. 2, and Fig. 4 is a verticalsectional View taken at right angles to the plane of the section in Fig.3 along the line y y in Fig. 2.

In the views, 1 represents the outer shell or body of the stove, whichis as shown rectangular in form, having legs 2 for supporting it abovethe door of the room wherein the stove is located, and inside said shellor body 1 is supported in any manner an inner shell 3, also ofrectangular form, but of less dimensions than said outer shell 1,whereby an air-chamber 4 is formed between said inner and outer shellsat the top, sides, bottom, and one end of the stove, the other end ofthe stove being without such an air-chamber and having an opening formedthrough it adapted to be closed by a door 5, as clearly seen in Figs. 1and 3.

The interior of the inner shell 3 is provided at its forward endadjacent to the door 5 with a grate 6 of suitable construction, adaptedto support a fire, and below said grate is formed an ash-chamber 7, theforward part of which connects, by means of an opening 8, formed beneaththe door 5, with an ash-pan 9, projecting from the front wall of theshell 1 over the hearth 10 of the stove. The ash-pan 9 is covered by ahorizontally-swinging door or cover 9, having one end 9 bent down andpivoted to the hearth 10 of the stove, and having at its inner edge anupturned flange 9 to be engaged between the door 5 and the front of thestove, so that when the said door 5 is closed said cover 9 may also besecurely held in its closed position.

The fire on the grate 6 is adapted to be supplied with air forsupporting combustion by means of openings formed in the door 5 andcontrolled by dampers or equivalent devices 11, and the products ofcombustion pass upward through an opening 12, formed in the top of theinner shell 3 at the rear part thereof, and surrounded by a flange 13 toreceive and hold the lower end of the smoke-pipe 14, which conveys thesaid products of combustion to the flue or chimney.

The outer shell 1 is provided with an opening 15 in its top, locatedabove and of larger diameter than the opening 12 in shell 3, andsimilarly surrounded by a flange 16 to receive and hold a drum 17encircling the smoke-pipe 14, and provided at its top with a damper orvalve 18 to control the flow of air through said drum, as will behereinafter explained.

At the bottom ofthe shell 1 at the front part thereof is provided anair-inlet 19,adapted for communication with the air outside the room orbuilding in which the heater is arranged, and controlled by a valve ordamper 20, and at the rear part of said bottom is provided another inlet21, located directly beneath the openings 12 and 15 in'the tops of theshells 3 and 1, but of less diameter than either of said openings, andcontrolled by a valve or damper 22, pivoted at 23 to the bottom of theouter shell 1 and guided at its end in a bracket 24,secured thereto, asclearly seen in Figs. 1 and 2.

The bottom of the inner shell 3 is provided with an opening locateddirectly above and of substantially equal diameter to the opening orinlet 21 in the bottom of shell 1, and in said opening in shell 1 issecured the lower end of an air pipeor tube 25, which extends verticallythrough the shell 3 andcentrally through the openings 12 and 15, beingsurrounded by the smoke-pipe let and drum 17 and having its upper-partadapted for communication with the air outside of the room or buildingwherein the heating and ventilating stove is located, or with the flueor chimney.

Each side wall of the outer shell 1 is provided with an opening 26, cutthrough it, and having at its upper and lower sides, as clearly seen inthe drawings, projecting guide-flanges 27, overturned at their edges toreceive inturned flanges 28, formed on covers or doors 29, of suitabledimensions, arranged to slide on said guide-flanges 27, so as to more orless fully cover said openings 26, as will be explained hereinafter. Asherein shown, the shell is provided with but two of said openingsarranged in its opposite sides, but it will be evident that more orfewer may be provided and they may be variously located.

In operation, when it is desired to ventilate the room or buildingwherein the heater is located, the valve 20 is opened, so as to permitthe cold air from outside the room or building to enter the air-space 4,the valve 22 being likewise opened to permit the vitiated air at thefloor of the apartment to pass up through the pipe 25 and out at thechimney, owing to the draft created in said pipe 25 from the heat of thefire in the shell 3. At the same time the cold air entering said chamber4 .through the inlet-pipe 19 is also warmed and passes up through thedrum 17, the valve or damper 18 at the top thereof being of courseopened for this purpose, so that a supply of warm, fresh air is suppliedto take the place of the vitiated air withdrawn from the rooms.

When more warmth is desired than can be obtained in the manner abovedescribed, the

inflow and outflow of air through the respective pipes 19 and 25 may belessened or regulated by more or less fully closing the valves 20 and22, the damper 18 being left fully open and the side openings 26 of theouter shell 1 being more or less fully opened, so that the warm air ofthe room is passed into the airchamber at to be reheated.

WVhen heat near the stove only is desired, the side doors may be openedand the various valves or dampers 18, 20, and 22 may be closed, so thatthe circulation of air through the heater will be out OK and merely theair contacting with the stove will be heated or warmed.

From the above description of my inven- I tion it will be understoodthat the device is of an extremely simple and inexpensive construction,and is especially well adapted for ventilating and heating halls andapartments such as school-rooms, churches, and the like, where it isimperative that proper ventilation shall be had, this being provided forby my improved ventilating-heater without danger of harm resulting, asis common in cold-air ventilating devices.

It will also be obvious from the above de scription of my improvedventilating-heater that the device is susceptible of considerablemodification without material departure from the principles and spiritof my invention, and for this reason I do not wish to be understood aslimiting myself to the precise construction of the device herein setforth.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a heating device, the combination of a shell orcasing having a combustion-chamber provided with a grate, a door hingedto the side of the casing and adapted to close the combustion-chamber,an ash-pit formed outside the combustion-chamber at the lower partthereof, and a door for said ash-pit, said ash-pit door being held in aclosed position by V the door of the combustion-chamber when the same isclosed, substantially as set forth.

2. A heating device, comprising a shell or casing provided with acombustion-chamber having a grate, and having a hinged door affordin gaccess to the combu stion-chamber, an ash-pit extending outside thecasing at the lower part of the combustion-chamber and having an opentop, a door arranged to move horizontally across the top of the ash-pittoclose the same, said door being provided with an upturned flange alongits side adjacent to the ash-pit, said flange being arranged to beengaged by the door of the combustion-chamber, whereby when saidcombustion-chamber door is closed, the ash-pit door is also held in aclosed position, substantially as set forth.

- JOHN D. BARRIER.

Witnesses:

JONAS 000K, JOHN B. MoALLIs'rER.

